1 files changed, 126 insertions, 0 deletions
diff --git a/data.c b/data.c
new file mode 100644
index 0000000..fcfb5f5
--- /dev/null
+++ b/data.c
@@ -0,0 +1,126 @@
+#include "7w.h"
+
+int* getdeck(int era, int numplayers);
+int* cards_getproduction(int era, int card);
+int* get_intarray(int size);
+
+#define MISC 3
+#define DATAGOLD 0
+
+static int decks[3][49];
+static int player[7][4][7]; //3 eras and extra stuff (gold, military wins/defeats, etc.)
+static int hands[7][7];
+static int numplayers;
+
+void data_init(int n)
+{
+ numplayers = n;
+ int i, j, *deck;
+ for(i = 0; i < 3; i++) {
+  deck = getdeck(i, numplayers);
+  for(j = 0; j < numplayers; j++)
+   decks[i][j] = deck[j];
+ }
+}
+
+void data_startera(int era)
+{
+ int i, j, k;
+ k = 0;
+ for(i = 0; i < numplayers; i++)
+  for(j = 0; j < 7; j++)
+   hands[i][j] = decks[era][k++];
+}
+
+//0 is non producing, 1 produces one kind of resource, 2 produces multiple resources
+int data_productiontype(int era, int card)
+{
+ int *prod = cards_getproduction(era, card);
+ int i;
+ int type = 0;
+ for(i = 0; i < GOLD; i++) {
+  if(prod[i]) {
+   if(type == 1) type = 2;
+   if(type == 0) type = 1;
+  }
+ }
+ return type;
+}
+
+void data_removedefinites(int p, int *cost)
+{
+ int i, j, k, *prod;
+ for(i = 0; i < 3; i++) {
+  for(j = 0; j < 7; j++) {
+   if(data_productiontype(i, player[p][p][j]) == 1) {
+    prod = cards_getproduction(i, player[p][i][j]);
+    for(k = 0; k < GOLD; k++) {
+     if(prod[k] && cost[k]) {
+      cost[k] -= prod[k];
+      if(cost[k] < 0) cost[k] = 0;
+     }
+    }
+   }
+  }
+ }
+}
+
+#define INDEF 16
+
+int* data_getindefinites(int p)
+{
+ int *ret = get_intarray(INDEF);
+ int i, j, k;
+ k = 0;
+ for(i = 0; i < INDEF; i++) ret[i] = 0;
+ for(i = 0; i < 2; i++) {
+  for(j = 0; j < 7; j++) {
+   if(data_productiontype(i, player[p][i][j]) == 2) {
+    ret[k++] = i;
+    ret[k++] = player[p][i][j];
+   }
+  }
+ }
+ return ret;
+}
+
+int data_iszerocost(int *cost)
+{
+ int i;
+ int free = 1;
+ for(i = 0; i < GOLD; i++)
+  if(cost[i] > 0) free = 0;
+ return free;
+}
+
+static int recurse(int *cost, int *indef)
+{
+ int i;
+ int ncost[GOLD], nindef[INDEF], *prod;
+ for(i = 0; i < GOLD; i++) ncost[i] = cost[i];
+ for(i = 0; i < INDEF; i++) nindef[i] = indef[i];
+ for(i = 0; i < INDEF && nindef[i] != 0; i += 2);
+ if(i < INDEF) {
+  prod = cards_getproduction(nindef[i-1], nindef[i]);
+  nindef[i-1] = nindef[i] = 0;
+  for(i = 0; i < GOLD; i++) {
+   if(prod[i] && ncost[i]) {
+    ncost[i] -= prod[i];
+    if(data_iszerocost(ncost)) return 1;
+    if(recurse(ncost, nindef)) return 1;
+    ncost[i] += prod[i];
+   }
+  }
+ }
+ return 0;
+}
+
+//return 0 if can't afford, 1 if must buy stuff from neighbors, 2 if have all resources.
+int data_canafford(int p, int *cost)
+{
+ if(cost[GOLD] > player[p][MISC][DATAGOLD]) return 0;
+ int i, j, k;
+ data_removedefinites(p, cost);
+ if(data_iszerocost(cost)) return 2;
+ return recurse(cost, data_getindefinites(p));
+}